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A290446
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a(n) = Bell(n)*Motzkin(n-1).
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2
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1, 2, 10, 60, 468, 4263, 44727, 525780, 6830481, 96839125, 1484711160, 24430435406, 428792862307, 7986273135870, 157151111302530, 3254838706878084, 70722431837010468, 1607504293142601861, 38125031159774883774, 941342645386473873648, 24148088913729608830269
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OFFSET
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1,2
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LINKS
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MATHEMATICA
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motzkin[n_]:=Hypergeometric2F1[(1-n)/2, -n/2, 2, 4]; Table[BellB[n] motzkin[n - 1], {n, 50}] (* Indranil Ghosh, Aug 04 2017 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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